Simplify the Expression $x ^ { 3 } \cdot x ^ { 2 }$

Multiple Choice

Simplify the expression. Assume all variables represent nonzero real numbers.
- $x ^ { 3 } \cdot x ^ { 2 }$

A) $x ^ { 5 }$
B) $( 2 x ) ^ { 5 }$
C) $( 2 x ) ^ { 6 }$
D) $x ^ { 6 }$